Monthly Archives: October 2017

MULTI-PURPOSE MIXER

YHHD multi-purpose mixer

Multi-purpose mixers are specially designed to meet the specific mixing requirements of the fats and oils industry. Multi-purpose mixers are ideal for important process stages such as degumming, washing and neutralization in oil and fat refining.

The unique twin-inlet, double-chamber design improves both operating efficiency and economics. It makes it possible to combine high-intensity dispersion (in the upper chamber) with a preset contact time (in the lower chamber). This means that multi-effect mixers are suitable for use in a wide variety of mixing activities, including operating under more delicate mixing conditions.

With two separate inlets – one at the top and one at the bottom– it is possible to feed oil directly into the dispersion section, and then gradually into the mixing section, as required. Mixing can thus be done as flexibly as possible, and is easy to optimize. This solution also has the added advantage of preventing emulsions from forming.

The majority of the dispersion takes place in the top part of the mixer. Dispersion requires power and the greater the diameter of the vessel the more power is required. An upper part with a smaller diameter is therefore advantageous. In the bottom part of the mixer, highly turbulent, low-shear mixing is used to bring the dispersed chemicals into contact with all the oil being treated, in a volume large enough to provide sufficient contact time.

Technical specifications:

Model Capacity(t/d) Temperature(℃) Pressure(MPa) Viscosity(cst) Power(kw)
YHHD250 80-100 0-100 0-0.8 10-100 2.2-3
YHHD300 100-200 0-100 0-0.8 10-100 4-5.5
YHHD400 200-400 0-100 0-0.8 10-100 5.5-7.5
YHHD500 400-650 0-100 0-0.8 10-100 7.5-11
YHHD600 650-900 0-100 0-0.8 10-100 11-15
YHHD700 900-1200 0-100 0-0.8 10-100 18.5-22

DISC DECANTER

The Disc Decanter effectively combines the respective advantages of decanters and separators in one machine: a disc stack ahead of the liquid outlet in the decanter bowl provides additional, highly efficient secondary clarification of the liquid phase. With the integral disc stack, the relevant ultrafine particles are separated and then returned to the decanter’s solids chamber and discharged along with the solid matter. In this way a whole new dimension of economic efficiency is obtained.
With the Disc Decanter a previously unobtainable dry residue can be attained, which brings about a significant reduction in drying costs. The decanter capacity doubles, process stages become superfluous and both space requirement and capital and running costs fall.

CLARIFYING DECANTER

Clarifying decanter centrifuge is most often used for clarification of liquid containing high concentrations of solids, removing solids from liquid.

A clarifying decanter centrifuge is a sedimentation centrifuge for separation of suspended solids from one liquid. The characteristic which distinguishes a decanter centrifuge from other types of centrifuges such as disc stack separators is that it has a cone-cylindrical rotor equipped with a conveyor for continuous unloading of sedimented solids.

Clarifying decanter centrifuges are used in a wide range of applications where their ability to achieve both good clarity and low moisture in the discharged solids is appreciated. They are very versatile as they can handle both large and small particles as well as a wide variety of solids concentrations.

With different design, lengths and cone geometries, decanter centrifuge from Huading Separator can be applied in many processing that requires a separation step between solids and liquids. Huading Separator’s decanter centrifuges provide meticulous control, low cost and high reliability.

EXTRACTION DECANTER

Extraction decanters are a very efficient means of carrying out liquid-liquid extraction with a high solids content. Huading Separator has developed a continuous counter-current decanter specifically for such applications. The counter-current extraction decanter is a horizontal scroll-type centrifuge with a cylindrical conical solid-wall bowl. A scroll adapted to the bowl wall rotates with a differential speed inside the bowl.

These extraction decanters are able to extract valuable substances directly out of the suspensions. A typical area of application for these machines is the extraction of antibiotics from fermentation solutions. The suspension to be extracted, e. g. fermentation broth, flows through the external centrally arranged inlet tube and is fed into the machine via distributor slots in the scroll of the bowl. The suspension then enters the counter-current extraction zone of the bowl, where it flows to the conical end of the bowl via the separating disc against the flow direction of the extraction agent (counter-current effect). The extracted suspension (raffinate) is discharged under gravity from the discharge of the machine. The sedimented solids are conveyed by the scroll which rotates at a differential speed in relation to the bowl, and are discharged under gravity together with the raffinate. The extraction agent (solvent) flows through the internal centrally arranged inlet tube into the distributor, where it enters the counter-current extraction zone through apertures. The extraction agent flows to the cylindrical end of the bowl against the flow direction of the suspension to be extracted, and is then discharged under pressure via the centripetal pump. Both phases, namely the extract and the raffinate, are first mixed and then flow through the clarifying zones to enable the phases to be separated efficiently. In order to permit safe operation in explosive surroundings, the decanter has been provided with a gas-tight design and can also be blanketed with inert gas.

CLASSIFYING DECANTER

The solid-wall bowl of classifying decanter centrifuge has a cylindrical section for good separation and clarification of the liquid or classification of the solids and a conical section for dewatering the solids or concentration of the precipitated coarse particles. The product is fed info the decanter through the feed and is conveyed to the separating / classifying chamber through the distributor. The liquid level can be adjusted by regulating plates. The coarse solid particles are forced to the wall of the bowl by the centrifugal force. The scroll conveys the precipitated solids particles to the solids discharge. The clarified liquid or the classified fine particles are discharged from the separating chamber via replaceable regulating plate.

SEPARATING DECANTER


The solid-wall bowl of separating decanter centrifuge has a cylindrical section for efficient separation and clarification of the liquids and a conical section for drying the solids. The product enters the decanter through the feed and passes through the distributor into the separation chamber. The liquid level in the bowl is adjustable via regulating tubes. Due to the centrifugal forces, the solid particles are flung onto the bowl wall. The hardfaced scroll conveys them to the solids discharge which is equipped with hard metal bushes. The liquid phases are separated in the separation zone. For one type decanter the layer thickness of the heavy phase is externally adjustable via regulating tubes; this changes the liquid level in the bowl. The light liquid phase moves in the direction of the bowl axis and is discharged under pressure via centripetal pump. The heavy liquid phase moves in the direction of the bowl shell and is gravity discharged through regulating tubes. In the another type decanter the heavy liquid phase is discharged via centripetal pump while the light liquid phase is gravity discharged through regulating tubes.